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Author = Nazemi, Azadeh;
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Displaying Results 1 - 14 of 14 on page 1 of 1
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A method to implement DAISY online delivery protocol
(2014)
Nazemi, Azadeh; Murray, Iain; McMeekin, David A.
A method to implement DAISY online delivery protocol
(2014)
Nazemi, Azadeh; Murray, Iain; McMeekin, David A.
Abstract:
Digital Accessible Information System format (DAISY) is designed for vision impaired users to access to electronic document. The purpose of this project is creating a reliable and free one-way audio link over the Internet to provide low-cost DAISY format transmission, which support vision impaired users to access and listen DAISY books as audio stream through the link. By connecting to this link, clients can save desired files on their own device as much as they listen and they do not have to download entire DAISY book. This paper describes a method to implement the protocol between user station premises and remote broadcasting library server contains DAISY books. The method explains audio signal streaming from one computer to another, by using free open source software.
http://doras.dcu.ie/23056/
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A method to provide accessibility for visual components to vision impaired
(2013)
Nazemi, Azadeh
A method to provide accessibility for visual components to vision impaired
(2013)
Nazemi, Azadeh
Abstract:
Non-textual graphical information (line graphs, bar charts, pie charts, etc.) are increasingly pervasive in digital scientific literature and business reports which enabling readers to easily acquire the nature of the underlying information . These graphical components are commonly used to present data in an easy-to interpret way. Graphs are frequently used in economics, mathematics and other scientific subjects. In general term data visualization techniques are useless for blind people. Being unable to access graphical information easily is a major obstacle to blind people in pursuing a scientific study and careers .This paper suggests a method to extract implicit information of Bar chart, Pie chart, Line chart and math’s graph components of an electronic document and present them to vision impaired users in audio format. The goal is to provide simple to use, efficient, and available presentation schemes for non textual which can help vision impaired users in comprehending form wit...
http://doras.dcu.ie/23008/
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A method to provide high volume transaction outputs accessibility to vision Impaired using layout analysis
(2014)
Nazemi, Azadeh; Murray, Iain; McMeekin, David A.
A method to provide high volume transaction outputs accessibility to vision Impaired using layout analysis
(2014)
Nazemi, Azadeh; Murray, Iain; McMeekin, David A.
Abstract:
The Documents in the financial services, insurance, utilities, and government sectors typically require a high volume of PDF documents to be generated which are stored for presentment or archived for legal purposes. As high volume transactional output (HVTO) demands put increasing pressure on online presentment capabilities, accessibility has become a growing concern. In particular, access to these files proposes significant challenges when these documents are presented to visually impaired people using assistive technologies (i.e. screen readers). Since it is rare that all recipients are prepared to accept electronic delivery of their documents, a large portion of the documents is still printed as PDFs. In an online billing system, bills are sent to customers’ email accounts as attached PDF files or HTML links. These bills in the most cases are neither accessible through assistive technologies nor useable by vision-impaired customers. This paper provides a method for HVTO documents...
http://doras.dcu.ie/23010/
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Accessible and navigable representation of mathematical function graphs to the vision-impaired
(2015)
Nazemi, Azadeh; Fernando, Chandrika; Murray, Iain; McMeekin, David A.
Accessible and navigable representation of mathematical function graphs to the vision-impaired
(2015)
Nazemi, Azadeh; Fernando, Chandrika; Murray, Iain; McMeekin, David A.
Abstract:
Vision-impaired students have several issues accessing mathematical documents, which are associated with the representation of mathematical expressions and graphs of mathematical functions. Graphs of mathematical functions are visual presentations of mathematical information and useful to illustrate numerical or qualitative information, which are sometimes difficult or even impossible to describe. A graph is a picture that shows how sets of data are related to each other. Graphs of mathematical functions generally convey the intended message of a mathematical document. Therefore, access to graphs is essential in learning mathematics. Finding a solution to represent graphs of mathematical functions in an accessible format is necessary for the vision-impaired. This paper describes an approach to develop an application to address this issue by detecting, extracting and categorising important information from graphs of mathematical functions using three open source packages, namely, Ima...
http://doras.dcu.ie/23055/
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Authentication based on face recognition under uncontrolled conditions
(2017)
Tavakolian, Niloofar; Nazemi, Azadeh; Azimifar, Zohreh
Authentication based on face recognition under uncontrolled conditions
(2017)
Tavakolian, Niloofar; Nazemi, Azadeh; Azimifar, Zohreh
Abstract:
This paper describes a method to address is- sues regarding uncontrolled conditions in face recognition. This method using mask projection, extracts affecting factor from the test sample and adds it to all normal training samples then compares test sample with all synthetic affected training samples. The method has been applied for multi-factor authentication/verification based on face biometric. Obtained results indicate high accuracy in the lake of sufficient training samples for each class(single sample classes). of the claimed user.
http://doras.dcu.ie/23042/
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Digital talking book player for the visually impaired using FPGAs
(2012)
Nazemi, Azadeh; Ortega-Sanchez, Cesar; Murray, Iain
Digital talking book player for the visually impaired using FPGAs
(2012)
Nazemi, Azadeh; Ortega-Sanchez, Cesar; Murray, Iain
Abstract:
The Digital Talking Book (DTB) player is a device for the visually impaired to read, search, navigate and bookmark written material using DAISY and EPUB standards. This paper presents the design and implementation of a DTB player in an FPGA-based embedded system to play audio books containing MP3 (Daisy) files and utilize Text to Speech Synthesis (TTS) for text only books or EPUB books.
http://doras.dcu.ie/23049/
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Face recognition under occlusion for user authentication and invigilation in remotely distributed online assessments
(2018)
Tavakolian, Niloofar; Nazemi, Azadeh; Murray, Iain
Face recognition under occlusion for user authentication and invigilation in remotely distributed online assessments
(2018)
Tavakolian, Niloofar; Nazemi, Azadeh; Murray, Iain
Abstract:
This paper proposes a method to address issues regarding uncontrolled conditions in face recognition. This method extracts affecting factor from the test sample utilizing mask projection. Current methods remove occlusion from the test sample and reconstruct it. Unlike these methods, the proposed method tries to add extracted occlusion to all normal training samples and compares the test sample with all synthetic affected training samples. The method has been applied for multi-factor authentication/ verification based on face biometrics. Obtained results indicate high accuracy, comparable to the best sparse method, in the lake of sufficient training samples for each class(single sample classes).
http://doras.dcu.ie/23499/
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Mathematical formula recognition and transformation to a linear format suitable for vocalization
(2013)
Nazemi, Azadeh; Murray, Iain
Mathematical formula recognition and transformation to a linear format suitable for vocalization
(2013)
Nazemi, Azadeh; Murray, Iain
Abstract:
Students with vision impairment encounter barriers in studying mathematics particularly in higher education levels. They must have an equal chance with sighted students in mathematics subjects. Making mathematics accessible to the vision impaired users is a complicated process. This accessibility can be static or dynamic, in static accessibility the user is presented with a representation of the entire mathematic expression passively such as using Braille, dynamic accessibility allows the user to navigate the mathematical content in accordance with its structure interactively such as audio format[1]. MATHSPEAK is an application that accepts objects described in LaTeX and converts it to a linear or sequential representation suitable for vocalization, describing functions to people with severe vision impairment. MATHSPEAK provides interactive dynamic access to mathematic expressions by rendering them to audio format. This paper describes a method to create plain text from images of ma...
http://doras.dcu.ie/23032/
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Mathematical information retrieval (MIR) from scanned PDF documents and MathML conversion
(2014)
Nazemi, Azadeh; Murray, Iain; McMeekin, David A.
Mathematical information retrieval (MIR) from scanned PDF documents and MathML conversion
(2014)
Nazemi, Azadeh; Murray, Iain; McMeekin, David A.
Abstract:
This paper describes part of an ongoing comprehensive research project that is aimed at generating a MathML format from images of mathematical expressions that have been extracted from scanned PDF documents. A MathML representation of a scanned PDF document reduces the document’s storage size and encodes the math- ematical notation and meaning. The MathML representation then becomes suitable for vocalization and accessible through the use of assistive technologies. In order to achieve an accurate layout analysis of a scanned PDF document, all textual and non-textual components must be recognised, identified and tagged. These components may be text or mathematical expressions and graphics in the form of images, figures, tables and/or diagrams. Mathematical expres- sions are one of the most significant components within scanned scientific and engineering PDF documents and need to be machine readable for use with assistive technologies. This research is a work in progress and includes ...
http://doras.dcu.ie/23054/
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Non-visual representation of complex documents for use in digital talking books
(2016)
Nazemi, Azadeh
Non-visual representation of complex documents for use in digital talking books
(2016)
Nazemi, Azadeh
Abstract:
According to a World Intellectual Property Organization (WIPO) estimation, only 5% of the world's one million print titles that are published every year are accessible to the approximately 340 million blind, visually impaired or print disabled people. Equal access to information is a basic right of all people. Essen- tial information such as flyers, brochures, event calendars, programs, catalogues and booking information needs to be accessible by everyone. Information helps people to make decisions, be involved in society and live independent lives. Ar- ticle 21, Section 4.2. of the United Nation's Convention on the rights of people with disabilities advocates the right of blind and partially sighted people to take control of their own lives. However, this entitlement is not always available to them without access to information. Today, electronic documents have become pervasive. For vision-impaired people electronic documents need to be available in specific formats to be...
http://doras.dcu.ie/23020/
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Practical segmentation methods for logical and geometric layout analysis to Improve scanned PDF accessibility to vision impaired
(2014)
Nazemi, Azadeh; Murray, Iain; McMeekin, David A.
Practical segmentation methods for logical and geometric layout analysis to Improve scanned PDF accessibility to vision impaired
(2014)
Nazemi, Azadeh; Murray, Iain; McMeekin, David A.
Abstract:
The use of electronic documents has rapidly increased in recent decades and the PDF is one the most commonly used electronic document formats. A scanned PDF is an image and does not actually contain any text. For the vision–impaired user who is dependent upon a screen reader to access this information, this format is not useful. Thus addressing PDF accessibility through assistive technology has now become an important concern. PDF layout analysis provides precious formatting information that supports PDF component classification. This classification facilitates the tag generation. Accurate tagging produces a searchable and navigable scanned PDF document. This paper describes several practical segmentation methods which are easy to implement and efficient for PDF layout analysis so that the scanned PDF document can be navigated or searched using assistive technologies.
http://doras.dcu.ie/23016/
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Quick sift(QSIFT), an approach to reduce SIFT computational cost
(2018)
Fazel, Zahra; Famouri, Mahmoud; Nazemi, Azadeh; Azimifar, Zohreh
Quick sift(QSIFT), an approach to reduce SIFT computational cost
(2018)
Fazel, Zahra; Famouri, Mahmoud; Nazemi, Azadeh; Azimifar, Zohreh
Abstract:
SIFT has been proven to be the most robust local rotation and illumination invariant feature descriptor. Being fully scale invariant is the most important advantage of this descriptor. The major drawback of SIFT is time complexity which prevents utilizing SIFT in real-time applications. This paper describes a method to increase the speed of SIFT feature extraction using keypoint estimation and approximation instead of keypoint calculation in various scales. This research attempts to decrease SIFT computational cost without sacrificing performance and propose quick SIFT method (QSIFT). The recent researches in this area have approved that direct feature value computation is more expensive than the value extrapolation. Consequently, the contribution of this research is to reduces the time execution without losing accuracy.
http://doras.dcu.ie/23502/
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Single sample face identification
(2018)
Shahali, Fatemeh; Nazemi, Azadeh; Azimifar, Zohreh
Single sample face identification
(2018)
Shahali, Fatemeh; Nazemi, Azadeh; Azimifar, Zohreh
Abstract:
This paper describes three methods to improve single sample dataset face identification. The recent approaches to address this issue use intensity and do not guarantee the high accuracy under uncontrolled conditions. This research presents an approach based on Sparse Discriminative Multi Manifold Embedding (SDMME), which uses feature extraction rather than intensity and normalization for pre-processing to reduce the effects of an uncontrolled condition such as illumination. In average this study improves identification accuracy by about 17% compared to current methods
http://doras.dcu.ie/23501/
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Single sample face identification utilizing sparse discriminative multi manifold embedding
(2018)
Shahali, Fatemeh; Nazemi, Azadeh; Azimifar, Zohreh
Single sample face identification utilizing sparse discriminative multi manifold embedding
(2018)
Shahali, Fatemeh; Nazemi, Azadeh; Azimifar, Zohreh
Abstract:
This paper describes three methods to improve single sample dataset face identification. The recent approaches to address this issue use intensity and do not guarantee for the high accuracy under uncontrolled conditions. This research presents an approach based on Sparse Discriminative Multi Manifold Embedding (SDMME) , which uses feature extraction rather than intensity and normalization for pre–processing to reduce the effects of uncontrolled condition such as illumination. In average this study improves identification accuracy about 17% compare to current methods
http://doras.dcu.ie/23057/
Displaying Results 1 - 14 of 14 on page 1 of 1
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